AND A.K. RAHEJA, O.P. SHARMA, PRAVEEN ARORA. 2002. “Identification of Resistance in Mungbean Cultivars Against Viral Disease Complex by Use of Cluster Analysis”. Indian Phytopathology 46 (3): 213-17. https://epubs.icar.org.in/index.php/IPPJ/article/view/21465.